Ann Romney -- I EAT Like a Celebrity

Ann Romney followed up her "Tonight Show" appearance with dinner at LA landmark, The Ivy -- a restaurant known for 2 things: paparazzi and high-priced salads.

Mitt Romney's wife walked out of the Ivy last night with 4 friends and Secret Service agents in tow -- but she was tight-lipped when we asked the question everyone wants answered ... when you leave The Ivy: "What did you have for dinner?"

Fact is the most popular menu item is a grilled veggie salad ... which will run you anywhere from $27.75 to $37.75.

Take that 47-percenters.